public class KeyEvent extends TypedEvent
When a key listener is added to a control, the control will take part in widget traversal. By default, all traversal keys (such as the tab key and so on) are delivered to the control. In order for a control to take part in traversal, it should listen for traversal events. Otherwise, the user can traverse into a control but not out. Note that native controls such as table and tree implement key traversal in the operating system. It is not necessary to add traversal listeners for these controls, unless you want to override the default traversal.
IMPORTANT: All public static
members of
this class are not part of the RWT public API. They are marked
public only so that they can be shared within the packages provided by RWT.
They should never be accessed from application code.
KeyListener
,
TraverseListener
Modifier and Type | Field and Description |
---|---|
char |
character
the character represented by the key that was typed.
|
boolean |
doit
A flag indicating whether the operation should be allowed.
|
int |
keyCode
the key code of the key that was typed, as defined by the key code
constants in class
SWT . |
int |
stateMask
the state of the keyboard modifier keys at the time the event was
generated, as defined by the key code constants in class
SWT . |
data, display, time, widget
Constructor and Description |
---|
KeyEvent(Event event)
Constructs a new instance of this class based on the information in the
given untyped event.
|
Modifier and Type | Method and Description |
---|---|
java.lang.String |
toString()
Returns a string containing a concise, human-readable description of the
receiver.
|
public char character
public int keyCode
SWT
. When the character field of the event
is ambiguous, this field contains the unicode value of the original
character. For example, typing Ctrl+M or Return both result in the
character '\r' but the keyCode field will also contain '\r' when Return was
typed.SWT
public int stateMask
SWT
.SWT
public boolean doit
false
will cancel the operation.public KeyEvent(Event event)
event
- the untyped event containing the informationpublic java.lang.String toString()
toString
in class TypedEvent
Copyright (c) EclipseSource and others 2002, 2017.
All rights reserved. This program and the accompanying materials
are made available under the terms of the
Eclipse Public License v1.0